"Tell It to My Heart" is a song performed by American singer, songwriter and actress Taylor Dayne, originally made by Louisa Florio, released in July 24, 1987^[4] as her first single from her first album, Tell It to My Heart (1988). The single was Dayne's first major exposure, and she soon became known for her up-tempo, dance-oriented music. The song was written by Chappell Music staff songwriter Seth Swirsky and Ernie Gold. Swirsky almost did not deliver the song to his publisher after he and his girlfriend decided it was not good enough.

The song debuted on the US Billboard Hot 100 during the week of October 10, 1987, at position number 92, and entered the top 40 of the chart the week of November 14, 1987, rising to number 39 from number 43. Ten weeks later, during the week of January 23, 1988, the single peaked in the number seven spot. The song was present on the Hot 100 for 25 weeks. In the UK, "Tell It To My Heart" reached number three. It was the 23rd best-selling single of 1988 in the UK. In 1995, "Tell It to My Heart'" was remixed and re-released to promote Dayne's Greatest Hits package. This version climbed to number 23 on the UK Singles Chart.

"Tell It To My Heart" reached Taylor Dayne when Dayne contacted Chappell Music and asked to be sent some demos which had been overlooked, although the song had been recorded in early 1987 by Louisa Florio for a self-titled Canadian album release. Dayne recalled feeling an immediate affinity with the song: "I thought there was something about the hook – it's a happy hook." The track was recorded at Cove City Sound Studios in Glen Cove, Long Island. Dayne's father loaned her $6,000 to create the demo.^[5] The track took off so unexpectedly in the fall of 1987 that Taylor was forced to complete her debut album at Cove City Sound in eight weeks.

Swirsky also co-wrote Dayne's follow-up single "Prove Your Love". For almost two months, only the 12-inch record of "Tell It to My Heart" with four mixes was available for purchase, and ended up selling 900,000 copies alone.^[6]

Dayne was nominated for a Grammy Award for Best Pop Vocal, Female for her performance on "Tell It to My Heart" in 1988. Producer Ric Wake said in a 1994 interview with Vibe magazine that "Tell It to My Heart" "really blew people away".^[7] Commenting on Taylor Dayne's voice he said "They thought she was, like, black or some kind of ethnic...".^[7]

Lysette Cohen from Record Mirror wrote, "The single is one of those unbelievably catchy ones, full of what Taylor calls, "happy hooks". Yet it is more imposing and robust then your average dancefloor ditty. There's real guts in there. A little like the lady herself perhaps?"^[8] Another editor, Matthew Collin, felt that the single showed that Dayne "makes a brilliant disco queen".^[9]

A Spanish-language version titled "Díselo a mi corazón" was included on Spanish pop group Amistades Peligrosas's 1993 album, La última tentación. In 2002, English singer Kelly Llorenna released her version of the song as a single. It peaked at number nine in the United Kingdom and number 31 in Ireland.^[10][11] In 2011, American singer Raquela (Burt) released her version of the song as a single.^[12] It stayed on the DJ Times Top 40 dance charts for 28 weeks. In 2023, Cash Cash released a remix version of this song with newly re-recorded vocals from Dayne.^[13]